Adaptor for hypodermic syringe

ABSTRACT

An adaptor for a hypodermic syringe with a central outlet comprising a hypodermic needle having an inlet section at one end, an outlet section at the other end laterally offset from the inlet section and terminating in an insertion point and an intermediate section transverse to and connecting the inlet and outlet sections and a plastic body embedding the inlet, intermediate, and outlet sections with the insertion point exposed at one end of the body and with an integral fitting at the other end of the body surrounding the inlet end of the needle for mounting the needle on said discharge outlet and for connecting said discharge outlet to the needle.

809,146 2/1959 Great Britain......

575,105 4/1958 ltaly.............,.

479,154 3/1953 Primary Examiner-Richard A. Gaudet Assistant Examiner-J.C. McGowan Attorney, Agent, or FirmRa1ph Hammar [57] ABSTRACT An adaptorfor a hypodermic syringe with a central outlet comprising a hypodermicneedle having an inlet section at one end, an outlet section at theother end laterally offset from the inlet section and terminating in aninsertion point and an intermediate section transverse to and connectingthe inlet and outlet sections and a plastic body embedding the inlet,interme- Umted States Patent 191 Cloyd [54] ADAPTOR FOR I-IYPODERMICSYRINGE [75] Inventor: Harold S. Cloyd, Erie, Pa.

[73] Assignee: Nosco Plastics Incorporated, Erie,

[22] Filed: Sept. 6, 1972 [21] Appl. No.: 286,682

[52] US. 128/221, 128/218 N [51] Int. A6lm 5/32 [58] Field ofSearch......... 128/221, 218 N, 218 NV DIG. 5, 2 F

[56] References Cited UNITED STATES PATENTS 128/221 diate, and outletsections with the insertion point exl28/221 posed at oneend of the bodyand with an integral fit- 123/221 ting at the other end of the bodysurrounding the inlet 128/218 NV end of the needle for mounting theneedle on said discharge outlet and for connecting said discharge outletto the needle.

FOREIGN PATENTS OR APPLICATIONS mnmuuufl mm e n rrul r uu nu S bb oh mmmr .1.l ma BGGBSSB 4896890 5556667 9999999 1111111 l/l/l/l 982437 94999328 58479 6 0 9 0 4 4 2 5094040 6599832 2223333 128/215 4 Claims, 1Drawing Figure 946,360 6/1949 France................................

1 ADAPTOR FOR HYPODERMIC SYRINGE This invention is a hypodermic needleadaptor constructed to keep the needle point parallel to the vein duringintravenous injection. The hypodermic needle has an inlet section, anoutlet section laterally offset from the inlet section and terminatingin an injection point, and an intermediate section transverse to andconnecting the inlet and outlet sections, all of which except theinjection point are embedded in a plastic body having an integralfitting at the inlet end of the needle for mounting the adaptor on andconnecting it to the discharge of the hypodermic syringe.

In the drawing, the single FIGURE is a fragmentary section through ahypodermic syringe with a preferred form of adaptor mounted thereon.

The syringe has a hub l with a Luer fitting 2 and a discharge duct 3extending through the fitting. The hub is centrally located on the axisof the body 4. .The particular syringe illustrated is described ingreater detail in application Ser. No. 98,226, incorporated byreference. Other syringes may be substituted for the syringe shown. Suchsyringes have been equipped with axially extending straight hypodermicneedles.

The adaptor has a one piece bent metal hypodermic needle ofsubstantially uniform cross section with a generally horizontal inletsection 5, an outlet section 6 laterally offset from and parallel to theinlet section. The connection between the inlet and outlet sections ismade through the transverse section 7 substantially at right angles tothe inlet and outlet sections and connected to the inlet and outletsections by bends 8 and 9. The outlet section 6 terminates in aninjection point 10 which lies substantially in the plane of the lowerside of the body 4 of the syringe so that the point can be easilyinserted substantially parallel to the vein and avoid penetration of theside walls of the vain. While the needle so far described is desirablefrom the point of view of injection, it lacks rigidity and is difiicultto mount on the hypodermic syringe.

To overcome both of these problems, a thermoplastic body 11 is injectionmolded around the inlet section 5, the intermediate section 7, the bends8 and 9 and a substantial portion of outlet section 6. One end of thebody terminates in the hub 12 surrounding the outlet section 6 andreceiving a needle protector 13. The other end of the body terminates ina Luer fitting l4 surrounding the inlet end 15 of the needle andcomplementary to the fitting 2 on the syringe.

The adaptor is adapted to injection molded plastics. Because theintermediate section 7 is at right angles to the inlet and outletsections 5 and 6, molding is simplified. The bends 8, 9 positivelyanchor the needle in the body 11. The rigidity imparted to the needle bythe body eliminates deflection which could interfere with the accuracyof insertion of the needle.

What is claimed is:

1. In combination, a hypodermic syringe means having an axiallyextending body with an integral centrally located hub at one endproviding a discharge fitting with an axially extending discharge ductextending through the fitting, said syringe being capable of hypodermicinjection when a straight axially extending hypodermic needle is mountedon said discharge fitting, a hypodermic needle of substantially uniformcross section and bent to provide an inlet section at one end coaxialwith said discharge fitting, an outlet section at the other endlaterally offset from and generally parallel to the inlet section andterminating in an insertion point for insertion into a veinsubstantially parallel to the vein to avoid penetration of the sidewalls of the vein, an intermediate section transverse to the inlet andoutlet sections, a bend connecting the inlet section to the intermediatesection, and another bend connecting the intermediate section to theoutlet section, and structure for increasing the rigidity of said needlewhen mounted on said discharge fitting, said structure comprising aninjection molded thermoplastic body molded about and embedding theinlet, intennediate and outlet sections and the bends of said needlewith the insertion point exposed atone end of the body, said body havinga fitting complementary to said discharge fitting integral with theother end of the body and surrounding the inlet end of the needlerigidly mounting the needle on said discharge fitting and connectingsaid discharge duct to the inlet end of the needle, said body anchoringand imparting rigidity to the needle and eliminating deflection whichcould interfere with the accuracy of insertion of the needle.

2. The combination of claim 1 in which the discharge fitting on the hubof the syringe is a Luer fitting.

3. The combination of claim I in which said body has a hub at said oneend for receiving a cover for said exposed point.

4. The combination of claim 1 in which said intermediate section of theneedle is at right angles to said inlet and outlet sections.

1. In combination, a hypodermic syringe means having an axiallyextending body with an integral centrally located hub at one endproviding a discharge fitting with an axially extending discharge ductextending through the fitting, said syringe being capable of hypodermicinjection when a straight axially extending hypodermic needle is mountedon said discharge fitting, a hypodermic needle of substantially uniformcross section and bent to provide an inlet section at one end coaxialwith said discharge fitting, an outlet section at the other endlaterally offset from and generally parallel to the inlet section andterminating in an insertion point for insertion into a veinsubstantially parallel to the vein to avoid penetration of the sidewalls of the vein, an intermediate section transverse to the inlet andoutlet sections, a bend connecting the inlet section to the intermediatesection, and another bend connecting the intermediate section to theoutlet section, and structure for increasing the rigidity of said needlewhen mounted on said discharge fitting, said structure comprising aninjection molded thermoplastic body molded about and embedding theinlet, intermediate and outlet sections and the bends of said needlewith the insertion point exposed at one end of the body, said bodyhaving a fitting complementary to said discharge fitting integral withthe other end of the body and surrounding the inlet end of the needlerigidly mounting the needle on said discharge fitting and connectingsaid discharge duct to the inlet end of the needle, said body anchoringand imparting rigidity to the needle and eliminating deflection whichcould interfere with the accuracy of insertion of the needle.
 2. Thecombination of claim 1 in which the discharge fitting on the hub of thesyringe is a Luer fitting.
 3. The combination of claim 1 in which saidbody has a hub at said one end for receiving a cover for said exposedpoint.
 4. The combination of claim 1 in which said intermediate sectionof the needle is at right angles to said inlet and outlet sections.